Two tablespoons of blood drawn from each of 100,000 volunteers will soon help Brigham Young University researchers create a DNA database and trace family trees back 15 generations.

Episode 3 of "Under the Banner of Heaven" goes inside a Latter-day Saint temple and brings up the subject of blood atonement.

Brigham Young doesn’t die in American Primeval and with good reason. In real life, Young wouldn’t perish until 1877. That’s a good twenty years after the events of the Netflix show.